<!DOCTYPE html>
<head>
<meta charset="UTF-8">
<title>流程控制-switch语句</title>
<script type="text/javascript">
var season = 3;
switch(season){
case 1:
console.log("春季");
break;
case 2:
console.log("夏季");
break;
case 3:
console.log("秋季");
break;
default:
console.log("冬季");
break;
}
if(season==1){
console.log("春季");
}else if(season==2){
console.log("夏季");
}else if(season==3){
console.log("秋季");
}else{
console.log("冬季");
}
var month = 6;
if(month>=2&&month<=4){
console.log("春季");
}else if(month>=5 && month<=7){
console.log("夏季");
}else if(month>=8&&month<=10){
console.log("秋季");
}else{
console.log("冬季");
}
switch(month){
case 2:
case 3:
case 4:
console.log("春季");
break;
case 5:
case 6:
case 7:
console.log("夏季");
break;
case 8:
case 9:
case 10:
console.log("秋季");
break;
default:
console.log("冬季");
break;
}
var score = 80;
// 优秀80-100 良好70-80 一般60-70 差小于60
</script>
</head>
<body>
</body>
</html>
switch语句
switch(a){
case 1:
break;
...可以有多个case
default:
//当前面的case都不满足的时候才会执行，default语句
}
